WO2012172949A1 - 油圧ショベル - Google Patents

油圧ショベル Download PDF

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Publication number
WO2012172949A1
WO2012172949A1 PCT/JP2012/063252 JP2012063252W WO2012172949A1 WO 2012172949 A1 WO2012172949 A1 WO 2012172949A1 JP 2012063252 W JP2012063252 W JP 2012063252W WO 2012172949 A1 WO2012172949 A1 WO 2012172949A1
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WO
WIPO (PCT)
Prior art keywords
cooling
cooling device
disposed
exterior member
air
Prior art date
Application number
PCT/JP2012/063252
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
順策 木下
統 高野
Original Assignee
株式会社小松製作所
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社小松製作所 filed Critical 株式会社小松製作所
Priority to CN201280001917.2A priority Critical patent/CN102985620B/zh
Priority to KR1020127030984A priority patent/KR101290612B1/ko
Priority to US13/809,497 priority patent/US8640803B2/en
Priority to DE112012000071T priority patent/DE112012000071B4/de
Publication of WO2012172949A1 publication Critical patent/WO2012172949A1/ja

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/08—Superstructures; Supports for superstructures
    • E02F9/0858—Arrangement of component parts installed on superstructures not otherwise provided for, e.g. electric components, fenders, air-conditioning units
    • E02F9/0866—Engine compartment, e.g. heat exchangers, exhaust filters, cooling devices, silencers, mufflers, position of hydraulic pumps in the engine compartment
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K11/00—Arrangement in connection with cooling of propulsion units
    • B60K11/02—Arrangement in connection with cooling of propulsion units with liquid cooling
    • B60K11/04—Arrangement or mounting of radiators, radiator shutters, or radiator blinds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/08—Front or rear portions
    • B62D25/10—Bonnets or lids, e.g. for trucks, tractors, busses, work vehicles
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/08—Superstructures; Supports for superstructures
    • E02F9/0858—Arrangement of component parts installed on superstructures not otherwise provided for, e.g. electric components, fenders, air-conditioning units
    • E02F9/0891—Lids or bonnets or doors or details thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/10—Guiding or ducting cooling-air, to, or from, liquid-to-air heat exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/12—Filtering, cooling, or silencing cooling-air
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/40—Special vehicles
    • B60Y2200/41—Construction vehicles, e.g. graders, excavators
    • B60Y2200/412—Excavators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P3/00—Liquid cooling
    • F01P3/18—Arrangements or mounting of liquid-to-air heat-exchangers
    • F01P2003/187—Arrangements or mounting of liquid-to-air heat-exchangers arranged in series

Definitions

  • the present invention relates to a structure for cooling a hydraulic excavator, in particular, a plurality of cooling devices provided in the hydraulic excavator.
  • the hydraulic excavator is equipped with various cooling devices including a radiator for cooling the cooling water of the engine, an oil cooler for cooling the hydraulic oil of the hydraulic equipment, and an aftercooler for cooling the compressed air supplied to the engine. Yes.
  • a cooling device is disposed on a side surface of a vehicle body, and a side door and an engine hood are provided to cover these cooling devices.
  • a lid is provided to cover. Further, an opening for taking in outside air is formed in the side door or the like.
  • Patent Document 2 shows that two air flow paths are provided from the side to the rear of the excavator, a radiator is disposed in one air flow path, and an oil cooler is disposed in the other air flow path. ing.
  • JP 2003-3519 A Japanese Patent Laid-Open No. 2002-30663
  • hybrid excavators have also been promoted.
  • a radiator for cooling an electric motor system such as an inverter herein, this radiator is referred to as “hybrid radiator”. Therefore, it is necessary to efficiently supply cooling air to the plurality of cooling devices to prevent deterioration of heat balance.
  • Patent Document 2 it is conceivable to provide two air flow paths and arrange a plurality of cooling devices in each air flow path.
  • An object of the present invention is to be able to efficiently supply air to each of a plurality of cooling devices provided in a hydraulic excavator.
  • the hydraulic excavator according to the first invention includes a lower traveling body, an upper swing body, a cooling unit, a first exterior member, and a second exterior member.
  • the upper swing body is pivotably supported by the lower traveling body and includes a drive source, a work machine, and a cooling fan.
  • the cooling unit is disposed in the middle of the air flow path formed by the cooling fan.
  • the first exterior member and the second exterior member are arranged in the front-rear direction and supported by the upper swing body to cover the cooling unit.
  • the cooling unit includes a first cooling device and a second cooling device. The first cooling device is disposed to face the first exterior member.
  • the second cooling device has an air flow path in a direction intersecting the direction in which the first cooling device is disposed on the side of the first cooling device on the second exterior member side and between the second exterior member and the cooling fan. It is arranged in the middle.
  • the first exterior member has a first opening at a portion overlapping the first cooling device in the height direction
  • the second exterior member has a second opening at a portion overlapping the second cooling device in the height direction. is doing.
  • positioned above among the 1st opening part of a 1st exterior member and the 2nd opening part of a 2nd exterior member is an upper edge of the other opening part arrange
  • the cooling fan when the cooling fan is driven, air is taken into the inside through the first opening of the first exterior member, and the taken-in air passes through the first cooling device. Thereby, the refrigerant in the first cooling device is cooled. Similarly, the air taken in through the second opening of the second exterior member passes through the second cooling device, whereby the refrigerant in the second cooling device is cooled.
  • the 2nd cooling device since the 2nd cooling device is arranged in the direction which crosses the 1st cooling device to the side of the 1st cooling device, it can arrange a plurality of cooling devices using space effectively. it can. Moreover, since the air taken in through the different openings is supplied to the first cooling device and the second cooling device, air is efficiently supplied to each cooling device. For this reason, deterioration of heat balance can be avoided.
  • first opening and the second opening are provided at positions shifted in the height direction, a large amount of air is taken in from one opening and a small amount of air is taken in from the other opening.
  • the problem of becoming can be suppressed.
  • it can suppress that the air taken in from two opening parts mutually interferes inside, and can supply air efficiently with respect to each cooling device.
  • the hydraulic excavator according to the second invention is the hydraulic excavator according to the first invention, wherein the first cooling device is arranged so that the air inflow surface faces the first opening of the first exterior member.
  • the second cooling device is arranged so that the air inflow surface is substantially orthogonal to the second opening of the second exterior member.
  • the air taken in from the first opening is efficiently supplied to the first cooling device.
  • the second cooling device is arranged so that the air inflow surface is substantially orthogonal to the second opening, the first opening and the second opening are provided in a shifted position in the height direction.
  • the air taken in from the two openings can be prevented from interfering with each other.
  • a hydraulic excavator according to a third aspect of the invention is the hydraulic excavator according to the first or second aspect, further comprising a third cooling device disposed in parallel with the first cooling device between the first cooling device and the cooling fan. Yes.
  • the air that has passed through the first cooling device is supplied to the third cooling device. Further, as described above, the air taken in from the two openings on the upstream side of the air flow path of the third cooling device is suppressed from interfering with each other. Cooling air is supplied.
  • a hydraulic excavator according to a fourth aspect of the present invention is the hydraulic excavator of any one of the first to third aspects, wherein the first cooling device and the second cooling device are arranged at positions shifted in the height direction.
  • the second cooling device is disposed so as to be inclined so that the upper part is positioned forward relative to the lower part.
  • the air that has passed through the second cooling device is guided to the opposite side of the first cooling device in the height direction. For this reason, it is possible to further prevent the air from interfering with each other at the same time as the two cooling devices are arranged at positions shifted in the height direction. For this reason, even when another cooling device is arranged on the first cooling device, air can be efficiently supplied to the other cooling device.
  • a hydraulic excavator according to a fifth aspect of the present invention is the hydraulic excavator according to any one of the first to fourth aspects of the invention, wherein the upper-part turning body is a vehicle having a first vertical frame and a first vertical frame arranged in the vertical direction on the side of the vehicle A second vertical frame arranged on the front side and a third vertical frame arranged on the vehicle front side of the second vertical frame are included.
  • the first exterior member is disposed between the first vertical frame and the second vertical frame
  • the second exterior member is disposed between the second vertical frame and the third vertical frame.
  • one side part is supported by the 2nd vertical frame.
  • the second exterior member is disposed close to the second cooling device, the air taken in from the second opening of the second exterior member is efficiently supplied to the second cooling device.
  • a hydraulic excavator according to a sixth aspect is the hydraulic excavator according to the fifth aspect, wherein the hydraulic excavator is disposed in an internal space covered by a second exterior member between the second vertical frame and the third vertical frame, and is connected to a drive source. An air cleaner is further provided. Then, air from the second opening of the second exterior member is sucked into the air cleaner.
  • a hydraulic excavator according to a seventh aspect is the hydraulic excavator according to any one of the first to sixth aspects, wherein the first cooling device is a hybrid radiator for cooling electrical components, and the second cooling device is a condenser for an air conditioner. It is.
  • a plurality of cooling devices can be efficiently cooled in a hydraulic excavator.
  • the present invention is effective when applied to a hybrid hydraulic excavator that requires a large number of cooling devices.
  • FIG. 1 is an external perspective view of a hybrid excavator according to an embodiment of the present invention.
  • the top view which shows two air flow paths.
  • the top view which shows arrangement
  • the layout of a plurality of cooling devices which constitute a cooling unit.
  • the partial external appearance perspective view of the hydraulic shovel which shows two air flow paths.
  • the partial external appearance perspective view which shows the positional relationship of each flame
  • the hydraulic excavator 1 is a hybrid hydraulic excavator and includes a swing electric motor, a generator motor, an inverter as a converter, a capacitor as a capacitor, a diesel engine, and the like.
  • the hybrid excavator 1 energy generated when the vehicle body turns is decelerated is converted into electric energy, and the electric energy obtained together with the energy of the generator motor directly connected to the engine is stored in the capacitor.
  • the stored electrical energy is used as auxiliary energy during engine acceleration through the generator motor.
  • “front”, “rear”, “left”, and “right” are directions determined based on the operator seated in the driver's seat.
  • the hydraulic excavator 1 illustrated in FIG. 1 includes a lower traveling body 2, an upper swing body 3, a work implement 4, and a cab 5.
  • the lower traveling body 2 has a pair of crawler belts C on both the left and right sides, and can travel by driving the crawler belts C.
  • the upper swing body 3 is supported by the lower traveling body 2 so as to be swingable, and can be swung in an arbitrary direction by a swing electric motor (not shown).
  • the work machine 4 and the cab 5 are mounted on the upper swing body 3.
  • the work machine 4 includes a boom 10, an arm 11, and a bucket 12. Further, the work machine 4 has a plurality of hydraulic cylinders for driving these constituent members 10 to 12.
  • an engine 15 is disposed horizontally at the rear of the upper swing body 3. That is, the crankshaft (not shown) of the engine 15 is disposed so as to be substantially orthogonal to the front-rear direction of the hydraulic excavator 1.
  • the engine 15 is covered with an engine cover and an exterior cover 16 installed above the engine cover.
  • a cooling fan 17 that is rotated by the engine 15 is provided at the tip (right end) of the engine 15.
  • a cooling unit 20 is disposed at the right end of the rear part of the upper swing body 3.
  • the cooling unit 20 includes a plurality of cooling devices.
  • a rear exterior door 21 and a front exterior door 22 as exterior members are arranged side by side in the front-rear direction so as to cover the cooling unit 20.
  • 2 and 3 are plan views of the cooling unit 20 as viewed from above with the exterior cover removed, and
  • FIG. 4 is a right side view of the rear portion of the excavator 1.
  • FIG. 3 only the structure regarding the cooling unit 20 is shown, and the other structural members are omitted.
  • each cooling device of the cooling unit 20 is schematically shown.
  • the cooling unit 20 is disposed on the upstream side of the air flow path formed by the cooling fan 17, that is, between the cooling fan 17 and the rear exterior door 21 and the front exterior door 22.
  • FIG. 5 shows an extracted configuration of the cooling unit 20.
  • the cooling unit 20 includes a radiator 25 for cooling the engine coolant, an oil cooler 26 for cooling the lubricating oil, and an aftercooler 27 for cooling the compressed air supplied to the engine.
  • a hybrid radiator 28 for cooling an electric motor system such as an inverter, and a condenser 29 for an air conditioner.
  • the radiator 25 and the oil cooler 26 face the rear exterior door 21 and are arranged side by side in the front-rear direction of the vehicle. More specifically, both the radiator 25 and the oil cooler 26 are vertically long when viewed from the side of the vehicle, and the air inflow surfaces 25a and 26a are substantially the same as the main surface 21a (see FIG. 4) of the rear exterior door 21. They are arranged in parallel. Moreover, the air inflow surfaces 25a and 26a of the radiator 25 and the oil cooler 26 are located on substantially the same surface.
  • the aftercooler 27 is disposed on the opposite side of the cooling fan 17 with the radiator 25 and the oil cooler 26 interposed therebetween.
  • the aftercooler 27 is arranged so as to overlap with the upper half region in the height direction of the radiator 25 and the oil cooler 26 in a side view of the vehicle.
  • the air inflow surface 27 a of the aftercooler 27 is parallel to the air inflow surfaces 25 a and 26 a of the radiator 25 and the oil cooler 26.
  • the hybrid radiator 28 is arranged on the same side as the aftercooler 27 and below the aftercooler 27. And the hybrid radiator 28 is arrange
  • the condenser 29 is disposed on the side of the radiator 25, the oil cooler 26, the aftercooler 27, and the hybrid radiator 28, that is, on the front side thereof.
  • the condenser 29 has a vertically long rectangular shape when viewed from the front of the vehicle, and is disposed so as to be substantially orthogonal to other cooling devices. More specifically, the air inflow surface 29a of the condenser 29 is substantially orthogonal to the air inflow surfaces 25a, 26a, 27a, and 28a of other cooling devices such as the radiator 25.
  • the capacitor 29 is disposed so as to be inclined so that the upper part is positioned forward relative to the lower part.
  • the rear exterior door 21 is disposed in front of the counterweight 32 at the rear end of the vehicle. As shown in FIGS. 4 and 6, in the rear exterior door 21, a rear opening 21 b having a predetermined width in the height direction is formed below the center portion in the height direction.
  • the rear opening 21b is provided with a louver in order to suppress entry of foreign matters such as dust and determine the direction of wind flow.
  • the rear opening 21 b is formed at a position facing the hybrid radiator 28. Therefore, almost the entire rear opening 21b overlaps the hybrid radiator 28 in a side view of the vehicle.
  • the front exterior door 22 is arranged in front of the rear exterior door 21. Above the center in the height direction of the front exterior door 22, a lower / front opening 22b and an upper / front opening 22c having a predetermined width in the height direction are formed. These front openings 22b and 22c are arranged so as not to overlap with the rear opening 21b in the height direction. More specifically, the lower edge of the lower / front opening 22b formed below the front openings 22b and 22c is located above the upper edge of the rear opening 21b.
  • the two front openings 22b and 22c are provided with louvers in order to suppress the entry of foreign matters such as dust and determine the direction of the flow of wind. The two front openings 22b and 22c almost entirely overlap the capacitor 29 in the height direction.
  • a space R partitioned by a part of the vehicle body frame constituting the upper swing body 3 and other components is formed inside the front exterior door 22.
  • an air cleaner 33 connected to the engine 15 via a pipe is arranged.
  • the first air flow path A1 is a flow path that passes through the hybrid radiator 28 from the rear opening 21b of the rear exterior door 21 and further passes through the substantially lower half area of the radiator 25 and the oil cooler 26 to reach the cooling fan 17. is there.
  • the second air flow path A2 passes through the condenser 29 from the two front openings 22b and 22c of the front exterior door 22 through a region other than the air cleaner 33, and is substantially the upper half of the radiator 25 and the oil cooler 26. The flow path passes through the region and reaches the cooling fan 17.
  • the turning frame 35 constituting the upper turning body 3 has a base frame 36 and first to third vertical frames 37, 38, 39 extending upward from the base frame 36. .
  • the lower ends of the three vertical frames 37, 38, 39 are fixed to the base frame 36.
  • the rear exterior door 21 is supported by a first vertical frame 37 disposed at the rearmost position, and the front exterior door 22 is supported by a third vertical frame 39 disposed at the most forward position. More specifically, the rear side portion of the rear exterior door 21 is attached to the first vertical frame 37 via a hinge so as to be opened and closed. A hook (not shown) provided on the front side portion of the rear exterior door 21 can be locked to a locking portion provided on the second vertical frame 38.
  • the front exterior door 22 is attached to the third vertical frame 39 so that the front side portion can be opened and closed through a hinge. Further, a hook (not shown) provided on the rear side portion of the front exterior door 22 can be locked to a locking portion provided on the second vertical frame 38.
  • the right side of the capacitor 29 is fixed inside the second vertical frame 38.
  • the air that has passed through the rear opening 21b of the rear exterior door 21 is taken into the vehicle as indicated by an arrow A1 in FIGS.
  • the refrigerant flowing in the first air flow path A1 mainly cools the refrigerant of the hybrid radiator 28. Then, the refrigerant that has passed through the lower half of the radiator 25 and the oil cooler 26 is cooled by the air that has passed through the hybrid radiator 28.
  • part of the air that has passed through the upper and lower front openings 22b and 22c of the front exterior door 22 is taken into the air cleaner 33 as shown by the arrow A2 in FIGS.
  • the refrigerant in the condenser 29 is first cooled by the air flowing through the second air flow path A2.
  • the air that has passed through the condenser 29 flows rearward and flows obliquely upward toward the aftercooler 27 because the condenser 29 is inclined.
  • the air cools the refrigerant in the aftercooler 27.
  • the refrigerant that flows through the upper half of the radiator 25 and the oil cooler 26 is cooled by the air that has passed through the condenser 29 and the air that has passed through the aftercooler 27.
  • the air flowing through the first air flow path A1 and the second air flow path A2 It is hard to interfere with the flowing air. For this reason, it can suppress that the quantity of the air which flows through the capacitor
  • the condenser 29 is arranged so that the upper part is positioned forward relative to the lower part, and the air that has passed through the condenser 29 is guided obliquely upward to the rear. For this reason, the air that has passed through the condenser 29 is efficiently guided to the aftercooler 27. Further, it is possible to further suppress interference between the air that has passed through the condenser 29 and the air that has passed through the hybrid radiator 28.
  • the capacitor 29 is supported by one of the two vertical frames 38 and 39 sandwiching the front exterior door 22. For this reason, the capacitor 29 can be brought close to the openings 22 b and 22 c formed in the front exterior door 22, and air is efficiently supplied to the capacitor 29.
  • a space is formed inside the front exterior door 22, and an air cleaner 33 and a capacitor 29 are arranged in the internal space. For this reason, air other than the air taken into the air cleaner 33 can be reliably supplied to the capacitor 29.
  • the cooling unit is arranged on the right side of the vehicle, but the arrangement of the cooling unit is not limited to the above embodiment.
  • the hybrid radiator may be disposed at the top
  • the capacitor may be disposed at the bottom
  • the rear opening may be formed upward
  • the front opening may be formed downward.
  • the hydraulic excavator according to the present invention can efficiently cool a plurality of cooling devices.
  • the present invention is effective when applied to a hybrid hydraulic excavator that requires a large number of cooling devices.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Transportation (AREA)
  • Component Parts Of Construction Machinery (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Fluid-Pressure Circuits (AREA)
PCT/JP2012/063252 2011-06-17 2012-05-24 油圧ショベル WO2012172949A1 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CN201280001917.2A CN102985620B (zh) 2011-06-17 2012-05-24 液压挖掘机
KR1020127030984A KR101290612B1 (ko) 2011-06-17 2012-05-24 유압 셔블
US13/809,497 US8640803B2 (en) 2011-06-17 2012-05-24 Hydraulic excavator
DE112012000071T DE112012000071B4 (de) 2011-06-17 2012-05-24 Hydraulikbagger

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011-135231 2011-06-17
JP2011135231A JP5160668B2 (ja) 2011-06-17 2011-06-17 油圧ショベル

Publications (1)

Publication Number Publication Date
WO2012172949A1 true WO2012172949A1 (ja) 2012-12-20

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2012/063252 WO2012172949A1 (ja) 2011-06-17 2012-05-24 油圧ショベル

Country Status (6)

Country Link
US (1) US8640803B2 (de)
JP (1) JP5160668B2 (de)
KR (1) KR101290612B1 (de)
CN (1) CN102985620B (de)
DE (1) DE112012000071B4 (de)
WO (1) WO2012172949A1 (de)

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Publication number Priority date Publication date Assignee Title
JP5160668B2 (ja) * 2011-06-17 2013-03-13 株式会社小松製作所 油圧ショベル
JP5758338B2 (ja) * 2012-03-29 2015-08-05 株式会社クボタ 作業機
WO2015019715A1 (ja) * 2013-08-09 2015-02-12 株式会社小松製作所 作業車両
JP6469381B2 (ja) * 2014-07-28 2019-02-13 日立建機株式会社 ハイブリッド式作業機
JP6132273B2 (ja) * 2014-07-28 2017-05-24 日立建機株式会社 ハイブリッド式作業機
JP6415890B2 (ja) * 2014-08-04 2018-10-31 株式会社クボタ 作業車
WO2016088233A1 (ja) * 2014-12-04 2016-06-09 株式会社小松製作所 作業車両
CN105408156A (zh) * 2015-08-24 2016-03-16 株式会社小松制作所 混合动力作业车辆
JP6914660B2 (ja) * 2016-01-25 2021-08-04 住友建機株式会社 ショベル
US10184227B2 (en) * 2016-06-21 2019-01-22 Kubota Corporation Work machine
KR102567146B1 (ko) * 2017-05-31 2023-08-18 한온시스템 주식회사 차량용 쿨링모듈
US11413955B2 (en) * 2018-06-29 2022-08-16 Kubota Corporation Working machine
CN111894070B (zh) * 2020-07-24 2022-06-03 上海聚联建设发展有限公司 一种散热结构及挖掘机

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KR101290612B1 (ko) 2013-07-29
JP2013002170A (ja) 2013-01-07
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